$ORIGIN example.com.
$TTL 3600

@	SOA	dns1.example.com. hostmaster.example.com. (
		2010111214	; serial
		6h		; refresh
		1h		; retry
		1w		; expire
		1d )		; minimum

	NS	dns1


dns1	A	192.0.2.1

labs.example.com.       IN A       0.0.0.0
labs.example.com.       IN DNAME   rd.example.com.

www.labs.example.com.   IN A       0.0.0.0
